For long range hunting accuracy and knock down power I doubt you'd ever build a custom rifle modeled after the Weatherby that matches the performance of the factory Weatherby .270 Magnum.
https://www.google.com/search?q=Weatherby+.270+mag&client=ubuntu&hs=dmT&channel=fs&source=lnms&tbm=isch&sa=X&ei=TDXtVLm9FI3uoASRsYLICQ&ved=0CAgQ_AUoAg&biw=1231&bih=927#imgdii=_&imgrc=xtK6Ui2oXvgO0M%253A%3BJlw9_QJ_uNugBM%3Bhttp%253A%252F%252Fwww.gunsamerica.com%252Fuserimages%252F5212%252F903133263%252Fwm_6738783.jpg%3Bhttp%253A%252F%252Fwww.gunsamerica.com%252F903133263%252FWEATHERBY-MARK-LAZERMARK-V-270-WBY-MAG-w-ZEIS.htm%3B2592%3B1728